Modern_Data_Warehouse

Welcome to the Modern Data Warehouse Project! Here you’ll find a full-stack demonstration of building a modern data warehouse, implementing robust ETL pipelines, and crafting insightful analytics. This portfolio-grade solution highlights industry best practices in data engineering and data analytics.

🏗️ Medollian Data Warehouse Structure

Our warehouse design follows the Medollian Architecture, which organizes data into three progressive layers: Bronze (Raw)
Ingests source data exactly as it arrives (CSV files, database exports, etc.). Keeps a faithful archive of raw records. Silver (Cleansed & Standardized)
Applies data validation, cleansing, and normalization steps. Ensures consistency and prepares data for analytics use. Gold (Business-Ready)
Transforms Silver data into star schema models (fact and dimension tables) tailored for reporting and BI tools. This layering ensures traceability from raw to refined data, simplifies debugging, and scales gracefully as data volume grows.

📖 Project Highlights

Data Architecture
Architected with Medollian layers to enforce clear separation of concerns and maintain auditability. ETL Pipelines
Automated scripts to extract CSV datasets, clean & transform records, and load into SQL Server. Data Modeling
Star schema design with fact tables for events (sales, transactions) and dimension tables for entities (customers, products).

🎯 Who Should Explore This Repo?

Aspiring Data Engineers and Architects
SQL/BI developers building enterprise-grade warehouses
Analysts eager to learn end-to-end data workflows
Students and professionals crafting portfolio projects

🛠️ Tools & Resources

Datasets: CSV files for ERP and CRM exports
SQL Server Express: Local data store
SQL Server Management Studio (SSMS): Interactive query and management
Draw.io: Architecture & data flow diagrams
Notion: Project planning templates

📂 Repository Structure

Modern_data_warehouse_project/
│
├── datasets/           # Source CSVs (ERP, CRM)
├── docs/               # Draw.io files & documentation
│   ├── data_architecture.drawio
│   ├── data_flow.drawio
│   └── data_catalog.md
├── scripts/            # ETL & orchestration scripts
│   ├── bronze/
│   ├── silver/
│   └── gold/
├── tests/              # Data quality and integration tests
├── README.md           # This file
└── LICENSE             # MIT License details

🛡️ License

This project is licensed under the MIT License. See LICENSE for full details.

About Me

I am a Business Intelligence Developer passionate about translating complex datasets into clear, action-oriented insights that drive strategic decision-making.